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JPL Small-Body Database Browser
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1805 Dirikis (1970 GD)
Classification: Main-belt Asteroid          SPK-ID: 2001805
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1108735019169151 3.2979e-08  
a 3.139332777714603 1.2495e-08 au
q 2.791263958966828 1.0154e-07 au
i 2.515729643198795 3.592e-06 deg
node 78.92388741778633 8.7218e-05 deg
peri 86.67150913055835 8.9139e-05 deg
M 52.25139421767985 1.7094e-05 deg
tp 2458705.616928808699
(2019-Aug-10.11692881)
9.6409e-05 TDB
period 2031.676038855798
5.56
1.213e-05
3.321e-08
d
yr
n .1771936042533362 1.0579e-09 deg/d
Q 3.487401596462377 1.3881e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2847  
   data-arc span      25398 days (69.54 yr)  
   first obs. used      1950-10-15  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .443  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 01:30:44  

Additional Information
 Earth MOID = 1.79997 au 
 Jupiter MOID = 1.48673 au 
 T_jup = 3.200 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.4   n/a MPO347531  
diameter diameter 28.098 km 0.238 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 23.0 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Behrend, R. (2003) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Hanus, J.; Broz, M.; Durech, J.; Warner, B.D.; et al. (2013) Astron. Astrophys. 559, A134.]
geometric albedo albedo 0.089   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

1805 Dirikis (1970 GD)          Discovered 1970-Apr-01 by Chernykh, L. at Nauchnyj
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1970 GD = 1942 EJ = 1948 JH = 1948 JM = 1950 TU1 = 1953 EL = 1955 QL1 = 1959 JP = 1962 WP = 1962 XC1 = 1964 FE 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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